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Wedjatmiko Wedjatmiko
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BEBERAPA ASPEK BIOLOGI IKAN DEMERSAL DAN KRUSTASEA DI PERAIRAN ARAFURA Wedjatmiko Wedjatmiko
Jurnal Perikanan Universitas Gadjah Mada Vol 12, No 1 (2010)
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (227.776 KB) | DOI: 10.22146/jfs.2914

Abstract

Arafura water is one of the centers of demersal fish and shrimp production in Indonesia. The exploitation of demersal fish and shrimp has grown quite rapidly, cause a declining trend in production from year to year. Besides the decline in production, changes also assumed to be occur in community and size structure of demersal fish and crustaceans. This research was conducted in the water of the Arafura in October to November 2006 to know the development of waters resources, particularly demersal fish and crustaceans (shrimp and crab). The result showed that there were changes in the composition of crustaceans, where commercial shrimp production decreased followed by an increase in types of non-commercial crustaceans (shrimp and crab). Family Portunidae (crabs) were very abundant and the most dominant species was Carybdis natator (98% of all crab species caught) with average catch rate of about 66 kg/hr. The size of demersal fish generally showed a declining trend. We observed in this research was much smaller than the previous year. Shrimp catches were dominated by krosok shrimp (Metapenaopsis sp.) which is a non-commercial shrimp.
KOMPOSISI SUMBERDAYA IKAN DEMERSAL DI PERAIRAN SELAT MALAKA Wedjatmiko Wedjatmiko
Jurnal Perikanan Universitas Gadjah Mada Vol 12, No 2 (2010)
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (117.5 KB) | DOI: 10.22146/jfs.2942

Abstract

Fish resources found in waters of Malacca Strait consist of shrimp, demersal fish, large pelagic fish and small pelagic fish resources. Exploitation of demersal resources in the waters of Malacca Strait is very intensive. Therefore this study was aims to determine the development of the composition of demersal fish in the waters of Malacca Straits. The study was conducted in the waters of Malacca Straits that focused around Belawan and Bengkalis, which was held in June 2008, using the KR. Bawal Putih and bottom trawl as fishing gear. The result showed that 70% of fish caught is demersal fish. The composition of the dominant demersal fish caught in the waters of Malacca Strait was different between Belawan and Bengkalis waters. In the Belawan waters, 3 most dominant demersal fish species caught were goats fish (Mullidae), squid (Loligonidae) and lizard fish (Synodontidae), while in Bengkalis waters, 3 most dominant demersal fish species caught were croackers fish (Scianidae), grunters fish (Pomadasidae) and stingrays (Dasyatidae). The difference in species composition of demersal fish in Belawan and Bengkalis waters, caused by differences in characteristics of the aquatic environment.
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